This is the next version of the 30 degree line. The dimensions of the previous versions reached their geometric limits - it is not possible to construct a box with 5mm rounded corners, without the sidewalls, like it makes sense for a 30 degree post-it box.

New hight: 50,15mm - will stay pretty sure
New length: 127,60mm - as the photo shows
New length, floor size: 87,10mm - as the photo shows
New and old width: 72mm

It is not sure, if the length and width will stay.
The new hight gives space for the 5mm rounding, without walls and it gives space for a bottom with a rail and snaps, like the anker mount has